1/8" Carbon Steel NPT Tap and "R" HSS Drill Bit Kit, Qualtech | POU1/8NPTW/ DRILL | DrillsandCutters.com
Amazon.com: GlowShift 1/8-27 NPT Drill & Tap Kit - 1/8" Carbon Steel Tap & R High Speed Steel Drill Bit for EGT Probe Installation to Exhaust Manifold : Automotive
Amazon.com: 1/8-27 NPT Tap And Die Set,Machine Thread Tap And Round Thread Die Right Hand HSS Taper : Industrial & Scientific
Drill America - DWTPT1/8-1SET 6 Piece NPT Pipe Tap, Carbon Steel, DWTPT Series Set, 1/8", 1/4", 3/8", 1/2", 3/4" and 1" in Wooden Case: Amazon.com: Industrial & Scientific
Drill America 3/4 in. Carbon Steel NPT Pipe Tap and 59/64 in. High Speed Steel Drill Bit Set (2-Piece) POU3/4NPTW/DRILL - The Home Depot
GlowShift | 3/8-18 NPT Drill and Tap Kit For Intake Manifolds